<div class="ur_cron_items_wrapper">
  <?php
    $parity = "even";
    foreach($pager->getResults() as $item): ?>
    <div class="ur_cron_item ur_cron_<?php echo $parity; ?>">
      <h2><?php echo $item->getTitle(); ?></h2>
    </div>
  <?php
      

      $parity = $parity == 'even' ? 'odd' : 'even';
    endforeach;
  ?>
</div>